Audio File Read

The block outputs the audio data as N-by-C matrix, where N is the samples per channel, and C is the number of channels supported by the audio.

For example, for a stereo audio source file with the Samples per audio channel (N) parameter set to 3, the block organizes the audio data into a 3-by-2 matrix, which represents a 2-channel signal containing three samples per channel.

Specify N with the Samples per audio channel (N) parameter. The number of channels, C, supported by the selected audio file is displayed in the block when you browse for the audio file using the File name parameter.

When the number of times the audio is played exceeds the value specified in the Number of times to play file parameter, the Port_1 port outputs 0 every sample time. For example, if you set the Number of times to play file parameter to 3, the Port_1 port outputs zeros after the audio file is played three times.

Data Types: int16

The port outputs 1 when the last audio sample is output from the block. Otherwise, the port outputs 0.

Dependencies

To enable the port, select the Output end of audio indicator parameter.

Data Types: Boolean

If the location of the file does not appear on your MATLAB^® path, click Browse to specify the full path. If the location of this file does appear on your MATLAB path, enter only the file name.

Enter inf to play the file until you stop the simulation.

The EOF port outputs 1 when the last audio sample is output from the block. Otherwise, the port outputs 0.

This parameter specifies the number of rows of the output matrix that the block outputs. The output matrix has dimensions N-by-C, where N is the number of samples per channel, and C is the number of channels.